Electric recording-instrument for ships  compasses and logs



(No Model.) 3 SheetsSheet 1.

G. L. JAEGER. ELECTRIC RECORDING INSTRUMENT FOR SHIPS COMPASSBS AND LOGS, No. 556,987. Patented Mar. 24, 1896.

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(No Model.) 3 Shets-Sheet 2.

C. L. JAEGER. ELEGTRIO RECORDING INSTRUMENT FOR SHIPS GOMPASSES AND LOGS.

No. 556,987. Patented Mar. 24,1896. I

WITNESSES: INVENTOR: fife/A5 iiwzzx' lhfileshioag-c I ATT RNEY (No Model.) 3 Sheets-Sheet 3.

C. L. JAEGER'. I ELECTRIC REGORDING INSTRIIMBNT FOR SHIPS UOMPASSES AND'LOGS.

No. 556,987. Patented Mar. 24, 1896.

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% AT RNEY AN DREW EGRAHAM. PHOTO-UTKQWASBINGTON. I! F) UNITED STATES CHARLES Ii.

PATENT OFFICE.

.LAEGER, OF MAYIVOOD, NE\V JERSEY.

ELECTRIC RECORDING-INSTRUMENT F OR SHIPS COMPASSES AND LOGS.

SPECIFICATION forming part of Letters Patent N0. 556,987, dated March 24, 1896.

Application filed January 25, 1894. Serial No. 497,969. (No model.)

To aZZ whom it may concern:

Be it known that 1, CHARLES L. JAEGER, a citizen of the United States of America, and a resident of Maywood, in the county of Bergen and State of New Jersey,have invented certain new and useful Improvements in Electric Recording-Instruments, of which the following is a specification.

My invention has reference to improvements in electric recording devices and especially to electric recording-logs and their ap plication to mariners recording-compasses.

It has for its object to provide reliable means whereby the distance shown on the dial of the log can be accurately recorded and simultaneously a record made of both the run and the course of the vessel.

The nature of my said invention will best be understood when described in connection with the accompanying drawings, in which Figure 1 represents a plan or top view, with the cover removed, of a log constructed ac cording to my invention. Fig. 2 is an elevation, partly in section, on the line 2 2, Fig. 1. Fig. 2* is a diagram illustrating the connections of the log. Fig. 3 is a diagram illustrating the arrangement of the recording compass and log and induction-coil. Fig. 4: is a diagram illustrating the production of the record.

The same letters an d numerals of reference designate the same or corresponding parts throughout the several views of the drawings.

In the drawings, referring at present to Figs. 1 and 2 for a description of the construction of the log, the letter A designates the box containing the counter or register mechanism of a taffrail-log of a usual construction, which is set into motion by the rotator (not shown) attached by the line to the spindle a, Fig. 1. To the cover I) of this box I attach the contact making and breaking mechanism of the log, which is preferably operated from the spindle 0, usually carrying the hand or pointer (Z.

B is a case of hard rubber or other insulating material secured to the cover Z) of the box by the threaded central sleeve 6 and nut f. Concentrically within the sleeve 0 is located a hard-rubber spindle g secured to a suitable post formed on the spindle c of the counter mechanism of the log. To the upper end of the spindle g is secured a conducting-arm 7L. This conducting-arm is bent downward and outwardly to bring its end adjacent an annular conducting-disk 0 provided with a series of radially and inwardly extending projections 2'. The conducting-arm 7L is secured in a metallic cap j attached to the top of the spindle g and its main portion is covered with a suitable insulating material. The exposed end of the conducting-arm does not come into contact with the projections 2', but revolves in a plane slightly above the same to produce a sparkling effect.

Z is a conductor secured to the hard-rubber cover B of the case B, the free end of which is brought quite close to the metal cap j, but does not come into contact with the same.

Z is a contact-strip secured to the cover 13 and carried down into contact with the conducting-disk O.

10 and 11 are wires entering the cover and held by binding-screws m m made of non-conducting material. The ends of these wires are respectively in contact with the strip Z and the conductor Z.

In Fig. 2* I have shown the log placed in connection with a recording device, L being the log; I the battery or other generator of electricity; I, the induction-coil, and R'the recording device, of any suitable construction, embodying a strip P of paper moving uniformly between a metallic point and surface.

The case B is filled to a sufficient height with an insulating liquid in order to permit the passage of a spark only when the conducting-arm h is directly opposite one of the projections i of the disk 0. It is now evident that in the rotation of the conductingarm 71. the moving strip P is successively perforated and a record established.

To obtain both the record of the ships course and the run from one instrument I have devised the apparatus illustrated in Figs. 3 and 4, where the log-record and the record of the course are made 011 a common strip. Referring to these drawings, M designates an electric recording-compass similar in construction to that for which Letters Patent No. 472,124 were granted to me on the 5th day of April, 1892, A designating the bowl hung in gimbals, B the compass-card and O the magnetic needle. To the lower face of the needle is secured a thin spiral strip D, made from aluminum or other suitable conducting material, said strip consequently participating in the movements of the needle. Below this. strip or recording arm is secured a plate E, of hard rubber, having therein a narrow radial slot F. Beneath this insulating-plate and contiguous therewith is arranged a metallic conductor G. The strip P, upon which the ships course is recorded, is passed across the slot F either above or below the insulating-plate E.

The insulating-plate E may be omitted and a narrow radial strip of conducting material substituted for the conducting-plate.

For forming the log-record, one wire, as 10, from the log L is led to a pointed member S, extending through the insulating-plate E and within a short distance of the metallic conductor G. The other wire, 11, from the log is connected to the wire leading from the induction-coil to the compass.

13* is the battery or other source of electricity, and I the induction-coil or equivalent device, all connected in a proper manner to produce the desired result. If desired, separate induction-coils may be used for the log and compass.

The record of the ships course is illustrated by dots marked 1) in Fig. 4 and the log-record by the dot-s marked 19.

The construction, arrangement, and operation of the several parts of the recordingcompass being fully set forth in the patent referred to, it is not deemed essential to repeat the same here.

By thus combining compass and log a 0011- tinuous and permanent record of the ships course and run is obtained, while the attachments do not interfere with the reading of the compass and log in the usual manner.

\Vhile I have shown the electric portion of the log connected directly to the counter mechanism of a usual form of log, it is evident that this counter mechanism could be entirely dispensed with and the make-and-break contact O h actuated from the rotator through any usual mechanism. Therefore I do not wish to restrict myself to the log mechanism shown, nor do I wish to restrict myself to a leg, as the principle involved can be applied equally well to other instruments.

\Vhat I claim as new, and desire to secure by Letters Patent, is

1. A combined recording compass and log comprising in its structure a magnetic needle, means for uniformly feeding a strip of paper, conductors arranged on opposite sides of said strip and influenced by the magnetic needle for recording the ships course, a makeand-break contact actuated by the log mechanism, conductors in connection with said make-and-break contacts and arranged on opposite sides of said strip for indicating the distance sailed, an induction-coil, and electrical connections, substantially as described.

2. An electric recording device comprising a conducting-disk having projections, a conducting-arm actuated through suitable mechanism and arranged to rotate close to the conducting-disk, conductors for the disk and conducting-arm, a source of electricity, an induction-coil, a recording device and electrical connections, substantially as described.

3. In a combined electrical compass and log, the combination of a conductor G, a recording-arm D secured to the needle and arranged to revolve in proximity to the conductor, and curved as described to bring successive parts thereof over the conductor, means for feeding a strip of paper between the two, a recording member S and conductor arranged in close proximity to each other, and a make-and-break contact actuated by the log mechanism, substantially as described.

4. In an electric recording-log, the combi nation of a casing, a conducting-disk secured in said casing, a conducting-arm secured to the mechanism actuated by the rotator and arranged to rotate close to the conductingdisk, a contact for the disk, a conductor for the conducting-arm, an insulating fluid in the casing, and electrical connections, substan-- tially as described.

In testimony that I claim the foregoing as my invention I have signed my name, in pres ence of two witnesses, this 5th day of January, lSD l.

CHARLES L. J AEGER.

\Vitnesses:

KLAS H. TERNSTEDT, CHARLES W, THOMAS. 

